Simultaneous polymerization and schulz-flory oligomerization of ethylene made possible by activation with MAO of a C1-symmetric [2,6-Bis(arylimino)pyridyl]iron dichloride precursor

Organometallics

Volumn 23, Issue 26, 2004, Pages 6087-6089

  Bianchini, Claudio ^a   Giambastiani, Giuliano ^a   Guerrero, Itzel Rios ^a   Meli, Andrea ^a   Passaglia, Elisa ^b   Gragnoli, Tania ^b  

^a Area di Ricerca CNR di Firenze   (Italy)

^b UNIVERSITY OF PISA   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

ACTIVATION ENERGY; CATALYSIS; CHEMICAL BONDS; COMPLEXATION; CRYSTALLIZATION; HIGH DENSITY POLYETHYLENES; IRON COMPOUNDS; NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY; OLEFINS; OLIGOMERS; POLYMERIZATION;

CHAIN-TRANSFER MECHANISMS; MELTING POINTS; MOLECULAR SYMMETRY; SCHULZ-FLORY DISTRIBUTION;

ETHYLENE;

EID: 11044234767     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om049313j     Document Type: Article

References (16)

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10. The use of different catalysis procedures has allowed us to exclude any role, for either mass transfer or catalyst activation phenomena, in diversifying the activity of 2 (see Supporting Information).
11. 2, contained in commercial MAO. See: Busico, V.; Cipullo, R.; Cutällo, F.; Friedericha, Nic.; Ronca, S.; Wang, B. J. Am. Chem. Soc. 2003, 125, 12402.
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14. 1H NMR spectrum of 2 shows four different signals for the i-Pr methyl groups (see Supporting Information).
15. 3 Since we have no doubt that both PE and olefins with a Schulx-Flory distribution arc obtained by applying the present experimental conditions, it may be concluded that the previous data are due to either different experimental conditions or, more likely, a wrong analytical procedure.
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